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Author Question: What observation supports the hypothesis that the slab-pull force is the primary cause of plate ... (Read 155 times)

faduma

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on: Jul 16, 2018
What observation supports the hypothesis that the slab-pull force is the primary cause of plate motion?
 
  A) Divergent plate boundaries represent all of the upwelling expected by mantle convection.
  B) Plumes are the deep upwelling component of convection with seismically slow velocities.
  C) Earthquakes and volcanoes are concentrated at plate boundaries.
  D) Plates with long subduction zones move faster than plates with short subduction-zones.

Question 2

Which of the following is oldest?
 
  A) Hawaiian Islands
  B) Hawaiian Seamounts
  C) Emperor Seamounts
  D) East Pacific Rise


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perkiness

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


faduma

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

amandalm

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Reply 3 on: Yesterday
Wow, this really help

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